You need a banner that drips ICE....LOL!
The “Hell” (Michigan) road sign with ice on it might work. :’)
http://www.google.com/search?q=hell+michigan+frozen&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&hl=en&tab=wi
We also have Paradise:
http://www.google.com/search?q=paradise+michigan&um=1&ie=UTF-8&tbm=isch&source=og&sa=N&hl=en&tab=wi